Quatets, trios, duets for young players

[bigboom]

I am currently interning at a local middle school and was asked by the band director if I could find a place to get some tuba quartets or trios for 2nd year players. Duets would be fine but I would prefer quartets. They have a range of G below the staff to 3rd space Eb, maybe to the F above that but nothing higher. I'm not too picky on rythim, eighth notes and some sixteenths with some amounts of syncapation would work. I'm just curious what people have liked because I would prefer not to just order it and find out it was not a good piece when it got here. Thanks in advance.

Ben